In recent years there has been a renewed interest in the deep connections between information and thermodynamics [1]}. This fundamental line of research originated with Maxwell's celebrated thought experiment [2]} and was further developed by Szilárd, Landauer, and Bennett [3]}, [4]}, [5]}. Advances in the theory of out-of-equilibrium systems led to the development of fluctuation theorems and other new results for processes with measurement and feedback [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}. This revival led to several experimental realizations of information engines [13]}, [14]}, [15]}, [16]}, [17]}, [18]}, [19]}, [20]}, [21]}, [22]}, [23]}, [24]}, [25]}. What was a thought experiment for Maxwell is now a reality.
